On Decorrelated Fast Cipher |
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| Authors: | Wenling Wu Bao Li Denguo Feng Sihan Qing |
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| Affiliation: | (1) Engineering Research Center for Information Security Technology, Chinese Academy of Sciences, 100080 Beijing |
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| Abstract: | Decorrelated Fast Cipher(DFC) is a candidate for the Advanced Encryption Standard (AES). It is shown that the cryptographic properties of the confusion permutation of DFC are weak in this paper. With the same F-function of DFC, a Feistel cipher VDFC which has no resistance against differential cryptanalysis is constructed. This demonstrates the importance of the key addition into DFC sufficiently. As a result, DFC may not be qualified candidate for the AES. |
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| Keywords: | Round function Permutation Differential cryptanalysis Nonlinearity |
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